/Engine/Plugins/Experimental/Mutable/Source/MutableRuntime/Public/MuR/MeshBufferSet.h
Add a new buffer by cloning a buffer from another set. The buffers must have the same number of elements.
void AddBuffer ( const [FMeshBufferSet](API\Plugins\MutableRuntime\MuR\FMeshBufferSet) & Other, int32 buffer )